JP2013183705A - Lighting system for plant cultivation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system for plant cultivation which can solve such inconvenience that the quantity of light necessary for the growth of a plant cannot be secured by shutting out light emitted from a plant growth light source by an insect trap light source and an insect catching part.SOLUTION: A lighting system 1 for plant cultivation includes plant growth light sources 2 and insect trap light sources 3. Each insect trap light source 3 is arranged inside an insect catching chamber 11. The upper part of the insect catching chamber 11 is formed with an inlet 12 communicating with the inside of the insect catching chamber 11. The insect catching chamber 11 is formed of a frame 14, reflective members 15 arranged in a side opening of the frame 14, and a lower cover 16 arranged on the lower end of the frame 14. The reflective member 15 reflects light received from the plant growth light source 2 in the lighting direction of the plant growth light source 2.

Description

  The present invention relates to a plant cultivation lighting device used in a plant cultivation apparatus for growing plants.

  The plant cultivation lighting device includes a plant growth light source such as a fluorescent tube that emits light having a wavelength distribution that contributes to plant growth. Further, there is also known a plant cultivation lighting device provided with an insect light source that emits light having a wavelength distribution that attracts insects in addition to the plant growth light source. An illuminating device in which an insect attracting light source and an insect capturing portion are arranged has been proposed.

JP 2004-81100 A

  However, in the illumination device disclosed in Patent Document 1, the light emitted from the plant growing light source is blocked by the insect attracting light source and the insect catching part, and the amount of light necessary for plant growing may not be secured. Nonuniformity in the amount of light may cause unevenness in the degree of growth.

  In view of the above circumstances, the present invention eliminates the inconvenience that the light emitted from the plant growth light source is blocked by the attracting light source and the insect trapping part and the amount of light necessary for plant growth cannot be secured, and that the degree of growth is uneven. An object of the present invention is to provide a lighting device for plant cultivation.

  In order to solve the above problems, a plant cultivation light source according to the present invention emits light with a wavelength distribution that contributes to plant growth and an insect light source that emits light with a wavelength distribution that attracts insects. And a reflection member that is arranged so as to surround the insect attracting light source to form a trapping chamber and reflects light received from the plant growing light source in the illumination direction of the plant growing light source, and an inlet portion that leads to the insect trapping chamber, It is characterized by having.

  If it is the said structure, a pest is captured by the said insect trapping chamber formed of the said reflection member arrange | positioned so that the said attracting light source may be enclosed. Moreover, since the said reflection member which forms the said insect trapping chamber reflects the light received from the said plant growing light source in the illumination direction of the said plant growing light source, the light radiate | emitted from the said plant growing light source is transmitted by the said insect attracting light source or a trapping chamber. The inconvenience that the amount of light necessary for plant growth cannot be secured due to the obstruction and the inconvenience that the degree of plant growth is uneven can be solved.

  The plant cultivation lighting device may include a top plate or a top plate side reflector that reflects the light emitted from the lure light source. If it is such a structure, the light radiate | emitted from the said attracting light source can be reflected on the said top plate or a top-plate-side reflector, and can be guide | induced outside the said insect trapping chamber from the said entrance part. That is, the light emitted from the insect attracting light source is irradiated indirectly to the outside of the insect trapping chamber. For this reason, the influence with respect to the cultivated plant by the light radiate | emitted from the said attracting light source is reduced.

  In the lighting device for plant cultivation, the reflecting member may be provided so as to be detachable or openable / closable with respect to the insect trapping chamber. If it is such a structure, since the inside of the said insect trapping chamber can be exposed by removing or opening the said reflection member with respect to the said insect trapping chamber, the inside of the said trapping chamber etc. can be performed easily.

  In the plant cultivation lighting device, an insect trapping adhesive body may be provided in the insect trapping chamber in a replaceable manner. With such a configuration, the insect captured by the adhesive body can be easily taken out together with the adhesive body.

  In the plant cultivation lighting device, light traveling in the direction of the entrance portion of the light emitted from the plant cultivation light source may be reflected by the reflector in the illumination direction of the plant cultivation light source. If it is such a structure, it can prevent that the light which goes to the direction of the said entrance part among the lights radiate | emitted from the said plant growth light source is no longer utilized for plant growth.

  According to the present invention, it is possible to eliminate the inconvenience that the light emitted from the plant growth light source is reduced by the attracting light source or the insect trapping chamber and the amount of light necessary for plant growth cannot be ensured, and the inconvenience that the degree of plant growth becomes uneven The effect of.

It is the perspective view which showed the illuminating device for plant cultivation which concerns on one Embodiment of this invention. It is the perspective view which showed the detail of the illuminating device for plant cultivation of FIG. It is a disassembled perspective view of the illuminating device for plant cultivation of FIG. FIG. 4A is an explanatory view showing an example of a structure for attaching and detaching a reflecting member, and FIG. 4B is an explanatory view showing an example of an opening / closing structure of the reflecting member. It is the perspective view which showed the reflection member to which the adhesive sheet was affixed. It is explanatory drawing which showed the light reflection aspect in the illuminating device for plant cultivation of FIG. It is explanatory drawing which showed the light reflection aspect in the illuminating device for plant cultivation which concerns on other embodiment of this invention. It is explanatory drawing which showed the light reflection aspect in the illuminating device for plant cultivation which concerns on other embodiment of this invention. It is explanatory drawing which showed the light reflection aspect in the illuminating device for plant cultivation which concerns on other embodiment of this invention. It is explanatory drawing which showed the light reflection aspect in the illuminating device for plant cultivation which concerns on other embodiment of this invention. It is explanatory drawing which showed the light reflection aspect in the illuminating device for plant cultivation which concerns on other embodiment of this invention. It is the schematic which showed an example of the plant cultivation apparatus using the illuminating device for plant cultivation of FIG.

  Next, a plant cultivation lighting device according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. The lighting device for plant cultivation according to the present invention is not limited to the one shown in the following embodiment, and can be implemented with appropriate modifications within a range not changing the gist thereof.

  As shown in FIG. 1, the plant cultivation lighting device 1 includes a plurality of plant growing light sources 2 and a plurality of insect attracting light sources 3 alternately. The plant growing light source 2 includes a fluorescent tube, a light emitting diode (LED), or the like that emits light having a wavelength band of 400 nm to 700 nm that contributes to plant growth. The attracting light source 3 includes a fluorescent tube, a light emitting diode, or the like that irradiates light in a wavelength band having a main wavelength of 365 nm (hereinafter referred to as attracting light) that attracts insects.

  The insect attracting light source 3 is disposed in a trapezoidal trapping chamber 11 which is narrowed toward the lower side. Further, an inlet portion 12 communicating with the inside of the insect trapping chamber 11 is formed at the upper portion of the insect trapping chamber 11. Further, a top plate 13 is provided so as to cover the upper part of the insect trapping chamber 11. On the lower surface of the top plate 13 is formed a reflector that diffusely reflects or specularly reflects the insect light emitted from the insect light source 3. Further, the plant growing light source 2 and the insect attracting light source 3 are supported by the top plate 13.

  The plant cultivation lighting device 1 is disposed above the plant cultivation region 4. The plant growing region 4 is, for example, a cultivation tray in hydroponics, but the plant cultivation lighting device 1 can be used in plant cultivation other than hydroponics.

  As shown in FIGS. 2 and 3, the insect trapping chamber 11 includes a frame 14, a reflecting member 15 disposed in a side opening of the frame 14, and a lower cover 16 disposed at a lower end portion of the frame 14. Is formed. The reflection member 15 diffusely reflects or specularly reflects light received from the plant growing light source 2 in the illumination direction of the plant growing light source 2. Further, the lower cover 16 diffuses or specularly reflects the insect light received from the insect light source 3 toward the top plate 13. In this example, all the members arranged in the side opening of the frame 14 are the reflecting members 15. However, the member arranged in the end opening on the most end side does not need to reflect light. It does not have to be.

  The height of the reflecting member 15 is set lower than the height of the side opening of the frame 14, and when the reflecting member 15 is attached to the side opening of the frame 14, the entrance portion is formed on the upper end side of the reflecting member 15. 12 is formed. The reflection member 15 is detachably attached to the frame 14 or can be opened and closed. For example, a magnet part is provided on both the reflection member 15 and the frame 14, or a magnet part is formed on one side and a magnetic part is provided on the other side. Of course, in addition to the configuration using such a magnet, as shown in FIG. 4A, a configuration that can be detached using a hook portion 15a or a configuration that can be detached using a thumbscrew can be adopted. . Further, as shown in FIG. 4B, a hinge 15b is provided on the lower end side (or upper end side) of the reflecting member 15, and a magnet or the like is provided on the upper end side (or lower end side) to make the structure openable and closable. be able to.

  As shown in FIG. 5, a trapping pressure-sensitive adhesive sheet 20 is provided on the back surface of the reflecting member 15 (the surface located on the insect trapping chamber 11 side). The pressure-sensitive adhesive sheet 20 is detachable and can be replaced with a new one at regular or irregular intervals. In addition, you may make the said adhesive sheet 20 contain the odor component which attracts an insect.

  FIG. 6 is an explanatory view showing a light reflection mode in the plant cultivation lighting device 1 shown in FIG. As shown in FIG. 6, the insect light emitted from the insect attracting light source 3 goes out of the insect trapping chamber 11 from the trapping chamber 11 through the inlet portion 12. The insect pests invited by the insect attracting light enter the insect trapping chamber 11 through the inlet 12 and are captured by the adhesive sheet 20. The reflecting member 15 reflects light received from the plant growing light source 2 in the illumination direction of the plant growing light source 2. This eliminates the inconvenience that the light emitted from the plant growth light source 2 is blocked by the insect attracting light source 3 and the insect trapping chamber 11 and the amount of light necessary for plant growth cannot be secured, and that the degree of plant growth is uneven. can do.

  Moreover, in this embodiment, since it has the top plate 13 which reflects the attracting light radiate | emitted from the said attracting light source 3, the attracting light radiate | emitted from the said attracting light source 3 is reflected by the said top plate 13, and the said entrance part 12 is provided. To the outside of the insect trapping chamber. That is, the insect attracting light emitted from the insect attracting light source 3 is irradiated to the outside of the insect trapping chamber 11 through indirect illumination. For this reason, the influence with respect to the cultivated plant by the lure light emitted from the lure light source 3 is reduced.

  In this embodiment, the reflection member 15 is detachably attached to the frame 14 or can be opened and closed. For this reason, the said reflection member 15 can be removed from the said flame | frame 14, or it can open and the inside of the said insect trapping chamber 11 can be exposed, and the said inside can be cleaned easily. Further, as described above, the insect attracting light source 3 can be replaced by exposing the inside of the insect trapping chamber 11. Further, since the insect trapping adhesive sheet 20 is replaceably provided on the surface of the reflecting member 15 located on the insect trapping chamber 11 side, the insect captured by the adhesive sheet 20 can be easily removed together with the adhesive sheet 20. It can be taken out. In addition, since a plurality of reflecting members 15 provided for one row of the insect trapping chamber 11 can be removed individually, it is possible to replace only the pressure-sensitive adhesive sheet 20 that has been trapped sufficiently.

  Of the light emitted from the plant growing light source 2, the light traveling in the direction of the entrance 12 is reflected in the illumination direction of the plant growing light source 2 by the concave surface of the reflector 2 a placed on the plant growing light source 2. I am doing so. For this reason, it can prevent that the light radiate | emitted from the said plant growth light source 2 and goes to the direction of the said entrance part 12 is no longer utilized for plant growth.

  In addition, if the insect attracting light source 3 is positioned near the bottom in the insect trapping chamber 11, it is considered that the insect trapping efficiency by the pressure-sensitive adhesive sheet 20 increases because the chance of the insects coming to the bottom of the trapping chamber 11 increases. Of course, it is not restricted to such a structure, For example, as shown in FIG. 7, it is good also as providing the said insect attracting light source 3 in the same height as the said entrance part 12. As shown in FIG. In this case, the attracting light emitted from the attracting light source 3 can easily go out from the entrance 12 directly, but since it goes out horizontally, the attracting light is directly applied to the plant growing region 4. Can be avoided. In addition, the attracting light directly coming out of the insect trapping chamber 11 can be reflected by the convex surface on the outer side of the reflector 2 a that is placed on the plant growing light source 2. Further, when the plant growing light source 2 is provided at the same height as the insect attracting light source 3, it is possible to share parts such as a fluorescent tube socket.

  Further, as shown in FIG. 8, the lower end of the inlet portion 12 may be extended to a position lower than the insect attracting light source 3. In this case, the attracting light emitted from the attracting light source 3 easily exits from the entrance 12 downward from the horizontal, but the plant growing light source 2 is on the path from which the attracting light exits the entrance 12. If it is provided, it is possible to prevent the plant-growing region 4 from being directly irradiated with the attracting light emitted directly from the insect trapping chamber 11.

  In addition, as shown in FIG. 9, an inlet portion 12 </ b> A may be formed on the lower end side of the reflecting member 15. In this case, a bent portion (light-shielding portion) or the like may be formed on the lower end side of the reflecting member 15 so that insect light is not directly applied to the plant growing region 4 from the entrance portion 12A. In addition, the lower cover 16 may be formed in a polished glass shape so as to diffuse and transmit the insect light from the insect light source 3.

  Moreover, as shown in FIG. 10, you may provide the top-plate side reflector 17 above the said insect attracting light source 3. As shown in FIG. In this way, when the top plate side reflector 17 is provided, the lower surface of the top plate 13 itself does not have to be a reflector.

  In addition, as shown in FIG. 11, an insect light source 3 may be provided at the bottom of the insect trapping chamber 11. For example, the insect light source 3 is disposed on the lower cover 16, and the transparent cover 18 that is transparent with respect to the wavelength band of the insect light is disposed on the insect light source 3. In the case of such a configuration, since the number of protrusions present in the insect trapping chamber 11 can be reduced, cleaning of the insect trapping chamber 11 is facilitated. Further, instead of providing the adhesive sheet 20 on the reflective member 15, a hanging type adhesive sheet may be suspended from the top plate 13.

  FIG. 12 is an explanatory view showing an example of a plant cultivation apparatus 101 using the plant cultivation lighting apparatus 1. Although this plant cultivation apparatus 101 is a hydroponic cultivation apparatus provided with the cultivation tray 102, the said plant cultivation lighting apparatus 1 can be utilized also in plant cultivation other than hydroponic cultivation.

  A cultivation tray 102 is disposed below the lighting device 1 for plant cultivation. A hydroponic bed 102a is arranged in the cultivation tray 102, and a cultivated plant seedling is set in a hole provided in the hydroponic bed 102a. The nutrient solution stored in the nutrient solution tank 103 is pumped up by the pump 151 of the nutrient solution circulation system 105 and supplied to the circulation main pipe 152. From the two circulation pipes 153 at the tip of the circulation main pipe 152, It is supplied to the uppermost cultivation tray 102. Each cultivation tray 102 is provided with a circulation pipe 154 for supplying nutrient solution to the cultivation tray 102 located on the lower side. A nutrient solution return pipe 155 is connected to the bottom of the cultivation tray 102 located at the lowest level.

  In the plant cultivation lighting device 1, the lighting / extinguishing period and timing of the plant growing light source 2 and the insect attracting light source 3 are not limited at all. For example, several seconds to several minutes before the plant growing light source 2 is turned off. Alternatively, the lighting of the insect light source 3 may be started, and conversely, the lighting of the insect light source 3 may be started after several seconds to several minutes have passed after the plant growing light source 2 is turned off. Good. Further, the simultaneous lighting period of the plant growing light source 2 and the insect attracting light source 3 may be set to a length of several hours.

  In the above embodiment, the insects are captured by the pressure-sensitive adhesive sheet. However, the insects may be captured by electric shock at a high voltage. When an adhesive sheet is not attached to the reflective member 15 or when a transparent sheet is used as the adhesive sheet, the reflective member 15 reflects light having a wavelength longer than, for example, 380 nm and has a shorter wavelength than that. It is also possible to use a dichroic mirror that transmits the light. In the case of this configuration, it is possible to guide the attracting light irradiated downward from the attracting light source 3 to almost the entire plant growing region 4, and a plant that grows by utilizing light of such a wavelength band. It is advantageous for cultivation. Further, both end surfaces of the insect trapping chamber 11 are open, and these both end surfaces also serve as entrances to the insect trapping chamber 11, but it is also possible to adopt a configuration in which the both end surfaces are closed.

  In the above embodiment, the plant growth light source 2 and the insect attracting light source 3 are alternately arranged. However, the present invention is not limited to such an alternate arrangement.

DESCRIPTION OF SYMBOLS 1 Plant cultivation lighting device 2 Plant growth light source 2a Reflector umbrella 3 Insect light source 4 Plant growth area 11 Insect capture room 12 Entrance part 12A Entrance part 13 Top plate 14 Frame 15 Reflective member 16 Lower cover 17 Top plate side reflector 20 Adhesive sheet ( Adhesive body)

Claims (5)

  A plant growth light source that emits light with a wavelength distribution that contributes to plant growth, an insect light source that emits light with a wavelength distribution that attracts insects, and an insect trapping chamber arranged so as to surround the insect light source and the above An illumination device for plant cultivation, comprising: a reflecting member that reflects light received from a plant growth light source in an illumination direction of the plant growth light source; and an inlet portion that communicates with the insect trapping chamber.   The lighting device for plant cultivation according to claim 1, further comprising a top plate or a top plate-side reflector that reflects the light emitted from the insect light source.   3. The plant cultivation lighting device according to claim 1, wherein the reflecting member is provided so as to be attachable / detachable or openable / closable with respect to the insect trapping chamber.   The lighting device for plant cultivation according to any one of claims 1 to 3, wherein an adhesive for catching insects is provided in the insect trapping chamber in a replaceable manner.   The lighting device for plant cultivation according to any one of claims 1 to 4, wherein light that travels in the direction of the entrance portion among light emitted from the plant growing light source is reflected by a reflector. An illumination device for plant cultivation, which is reflected in the illumination direction.

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